63540026605 has 16 divisors (see below), whose sum is σ = 83186020224. Its totient is φ = 46207401280.

The previous prime is 63540026593. The next prime is 63540026611. The reversal of 63540026605 is 50662004536.

It is not a de Polignac number, because 63540026605 - 2¹⁵ = 63539993837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 844299 + ... + 916471.

It is an arithmetic number, because the mean of its divisors is an integer number (5199126264).

Almost surely, 2^63540026605 is an apocalyptic number.

It is an amenable number.

63540026605 is a deficient number, since it is larger than the sum of its proper divisors (19645993619).

63540026605 is a wasteful number, since it uses less digits than its factorization.

63540026605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88196.

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 63540026605 in words is "sixty-three billion, five hundred forty million, twenty-six thousand, six hundred five".